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Classification Of Matter

Updated on December 25, 2009

MATTER

In the world about u, we find a wide verity of thing, such as air, water, wood, matter, stone, paper and living thing. These substances are all common example of matter. All thought matter exist in many different forms it has two very basic properties w.r.t its weight and space that its occupies.

The quantity of matter that a body contains is called its mass. Since there is twice as much liquid in a gallon as there in a half gallon, the gallon has twice the mass of the half gallon.

All the mass in a sense is pulled toward the center of earth by the fore of gravity. This downward pull exerted by gravity determines the weight of a body. Weight is directly proportional to its mass and inversely proportion to the square of its distance from the center of earth. A body with a great deal of mass has more weight than one with less mass. When a given body moves farther away from the center of earth, its weight decreases. For this reason a certain item will weight less on a high mountain than i would on the coast at sea level.

STATES OF MATTER

All the regardless of where it exists in universe, may appear in any one of thee distinct states; SOLIDS, LIQUIDS, GASES. Each state has its own unique characteristics that distinguish it from the others. In its solid state, matter has a definite volume and physical shape. Representative solid are stone, glass, metal, wood and paper. Liquids are quite different to the extent that they have a definite volume but do not have a specifics shape. They conform to the shape of container in which they are placed. Water, oil, alcohol and gasoline are common examples of liquids. Gas differs from other by not having a definite volume or shape. Typical example of gas is air oxygen hydrogen chlorine and neon.

Many substances may exist in all three state of matter, depending upon temperature if the temperature of water is below 32F (0 degree CO, It will appear in a solid state as ice. At room temperature water is normally liquid state increasing the temperature of water to 212F (100C) causes it to change into steam or the gaseous state.

COMPOSITION OF MATTER

Scientist generally believes that all matter compose of tiny particles called molecules. All the molecules of a particular substance are assumed to be alike, whereas those of another substance take on different form. Molecule are so small in size that it take 1000 or more of them sitting side by side to be visible on our best microscope. It has been estimated that one quart container of any gas under ordinary condition of temperature and pressure contains approximately 25*10 race to power 21 molecule.

A molecule is defined as the smallest particles into which matter can be divided and still retain its original chemical identity. Thus, a molecule of water is considered to be the smallest quantity of water that can exist and still be classified as water. Molecule themselves are composed of smaller particles known as atoms. An atom, by itself, is an independent particle that does not possess properties of original material from which it was obtained.

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